Beyond fisheries management: The Phronetic dimension

This paper has two main sources of inspiration. Firstly, building on Flyvbjerg's “Making Social Science Matter”[Flyvbjerg B. Making social science matter: why social inquiry fails and how it can succeed again. Cambridge: Cambridge University Press; 2003], I argue that the contribution of the social sciences to fisheries resource management must essentially be “phronetic” (after Aristotle's phronesis, i.e. practical wisdom), in contrast to the “scientific” (Aristotle: episteme) contribution of the natural sciences. Secondly, inspired by the recent publication “Fish for Life: Interactive Governance for Fisheries” [Kooiman J, Jentoft S, Pullin R, Bavinck M, editors. Fish for life: interactive governance for fisheries. Amsterdam: Amsterdam University Press; 2005], I hold that phronesis is basically what the notion of governance adds to management. Governance is the broader concept, inviting a more reflexive, deliberative and value-rational methodology than the instrumental, means-end oriented management concept. I claim that for interdisciplinarity to work in fisheries it is essential to recognize the fundamental methodological differences that exist between the social and natural sciences.     

广东省沿海风随高度变化研究

根据实测资料对我省沿海地区的风随高度变化规律进行了探讨，分析了沿海地区风向、风速变化特点，风速廓线指数律适合于我省沿海地区，根据指数律拟合的我省沿海地区风随高度变化系数小于目前各类规范所规定的系数。     

孕镶金刚石圆锯片的功耗

从理论和实践上研究孕镶金刚石圆锯片的单位体积破碎功与金刚石的粒径，浓度及工作间隙等因素的关系，研究认为，工作间隙较大者功耗较小。     

Resonance and criticality measure of ground motions via probabilistic critical excitation method

Resonant characteristics of recorded ground motions are investigated and a new measure of criticality of ground motions is proposed. Four classes of recorded ground motions, i.e., (i) near fault motions (rock records), (ii) near fault motions (soil records), (iii) long duration motions (rock records) and (iv) long duration motions (soil records), are taken from Abrahamson N, Ashford S, Elgamal A, Kramer S, Seible F, Somerville P, Proc of First PEER Workshop on Characterization of Special Source Effects, 1998. It is shown that resonant characteristics of recorded ground motions can be captured appropriately by means of the probabilistic critical excitation method due to the present author regardless of the type of ground motions and the distance between the critical response and the actual one can be a new measure of criticality of ground motions. The time-averaged approximate treatment of nonstationary ground motions as stationary ones is shown to be adequate for structures with shorter natural periods subjected to long duration ground motions.     

Eigendecomposition of TDR waveforms: a novel method to determine water content and pore fluid concentration of sandy soils

In this study, an incident pulse signal of several harmonics (i.e., multiples of the fundamental frequency) was used as a source in the time domain reflectometry (TDR) probing technique. Reflected signals were captured by an oscilloscope and their characteristics were determined via eigendecomposition. Autoregressive modeling and singular value decomposition were used to calculate the eigenvalues and the most significant ones were identified based on power spectrum. A multivariate statistical analysis was performed for the two most dominant eigenvalues, which are dependent on water content and salt concentrations, and regression equations were obtained. To determine the water content and salt concentrations in terms of the first and second eigenvalues, a modified Powell hybrid algorithm was used to solve the obtained system of nonlinear equations. Actual and predicted results are in agreement indicating that the developed method is very successful in predicting water content and salt concentrations. Furthermore, on comparing the eigendecomposition method with Fourier spectral analysis, one can observe that the former is superior in predicting water content and salt concentrations.     

Green hope or greenwash? The actions of the European Union at the World Summit on sustainable development

This article examines whether the European Union (EU) could be seen as a normative power at the recent World Summit on Sustainable Development. We explain how the EU operationalised its commitment to the concept of sustainable development before highlighting the impact the EU had on the final summit outcomes. It shows that although in many areas the EU was able to offer leadership, internal policy coherence prevented it fully being able to develop that role and thus fully promoting the norm of sustainable development.     

金沙江新桥滑坡群工程地质特征及治理措施

金沙江溪洛渡水电站对外交通专用二级公路所经新桥古崩塌体(岩堆)规模巨大，形成历史久远，当地人民称其为“垮山地势”。新桥滑坡群是在新桥古崩塌体基础上形成的。由3块小滑体(E、F、G)构成的一个大型的岩堆滑坡群。每个滑坡规模不等，发育阶段不同，成因各异。新建二级公路推荐方案路线垂直于E、F、G3个滑坡主轴线，从滑坡体中上部通过。文章通过分析滑坡所处的工程地质环境，详细描述了各滑坡的工程地质特征，在定性及定量两个层次上综合评价了该滑坡群的稳定性，分析预测了工程对其可能产生的不利影响。根据该滑坡群的工程地质特征，针对性地提出了对直接威胁路线安全的E、F、G3块滑体的综合治理措施。从工程角度出发，总结了滑坡区的公路选线及治理原则。     

地震地面运动模型的研究

地震地面运动被模拟成均值为零的两次过滤Ｇａｕｓｓ白噪声随机过程。第一次过滤削减白噪声的高频含量;第二次过滤削减白噪声的低频含量。根据地震记录的功率谱,使用非线性函数的最小二乘法,确定了两次过滤Ｇａｕｓｓ白噪声随机过程的功率谱密度函数的参数。     

沙环厂址核设计时程合成

本文根据广东沙环核电厂厂址地震地质环境特点和有关核法规的技术要求完成了设计地面运动时程的人工合成。从持续时间、合成精度、包络设计谱、功率谱密度函数、多根合成时程的统计不相关等方面讨论了该人工合成设计时程对ＡＳＣＥ４－８６ＳｔａｎｄａｒｄａｎｄＣｏｍ－ｍｅｎｔａｒｙｏｎＳｔａｎｄａｒｄ和Ｕ．Ｓ．ＮＲＣＳａｔｎｄａｒｄＲｅｖｉｅｗＰｌａｎ两个基本法规技术要求的可接受性。     

预报技巧的诊断研究

利用国家气象中心（北京）Ｔ４２Ｌ９模式的初始资料和预报资料，对５００ｈＰａ高度场的预报技巧进行了统计分析，并用一个简单的正压准地转谱模式对两个典型个例的正压不稳定性进行了研究。结果发现：北半球５００ｈＰａ高度场第五天的预报与初始场的某些经验正交函数的典型场有关。预报技巧与初始场的稳定性及其误差和背景场的配置有关。